数字式: digital主: host交换机: exchange board; switchboard主交换机: host change数字式转换交换机: digital transit exchange数字交换机: digital exchange数字小交换机: digital branch exchange数字式市内交换: digital local switching本地数字交换机: lds local digital switch高速数字交换机: high speed digital switch数字程控交换机: digital spc exchange; digital spc switch数字电话交换机: digital telephone exchange txd数字电子交换机: digital electronic exchange数字分组交换机: dbx digital branch exchange数字汇接交换机: digital tandem exchange数字市话交换机: digital local exchange数字数据交换机: digital data exchange数字专用小交换机: digital x; digital pbx专用数字交换机: private digital exchange自动数字交换机: ads automatic digital switch主交换架: main switching frame主交换中心: msc main switching center; primary center; primary switching center主交换装置: main switching unit数字式电子交换系统: dess digital electronics switching system程控数字长途电话交换机: spc digital toll exchange
